Pump-rod coupling.



THOMA' STEPHEN KEMP, OF CLARENDO'N, TEXAS.

PUMP-R01) COUPLING.

specification of Letters ram-11;.

ratentea July 22, 1918.

Application file December 203912. Serial No. 787,902.

To all whom it may concern:

Be it known that I, THOMAS S. KEMP, a

` citizen of the United States, residing at Clarendon, in the county ofDonley and State of Texas, have invented a new and useful Pump-RodCoupling, of which ,the following is a specification.

This lnvcntion relates to 'a pump rod coupling and more particularly toa coupling adapted to connect together pump rods i made of Wood orsimilar substance.

An object of the invention in to provide an improved form of coupling inwhich the ends of the rods to be coupled are wedgedly engaged by thecoupling member and the ends of said rods prevented from spreading -bymeans of suitable ferrules.

4 With the foregoing and other objects in view which will appear as thedescription proceeds, the inventlon resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, can be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the drawings accompanying this specification and forming a partthereof, the preferable form of my invention is illustrated, in which vFigure 1 is a view in elevation of my improved coupling secured to theends of suitable pump rods. Fig. 2 is a Vertical cross sectional view ofthe same in which the various parts have been detached. Fig.. 3 is adetail View of one of the rod engaging members. Fig. 4 is a detaillviewof one of the ferrules.

Referring to the drawings in which similar reference numerals designatecorresponding parts throughout the several views, 1 and 2 are the endsof wooden rods which are to be coupled. In the application of myimproved coupling to the ends of these rods, they are providedwith thetransverse cylindrical bores 3 and 4 communicating by the restrictedpassage 5. Extending down- Ward from the bore 4: is the restrictedpassage 6, the letter flarin1 outward adjacent the end of the rod. As asbeen illustrated in the drawings both the rods 1 and 2 are similarlyformed.

`\The ends of the rods are 'turned or cut on ai-bevel to form thefrusto-conical ends.

Adapted to fit within the:hored o'pbiiiiigs and restricted passage ofthe rod ends are the members formed withfthe lugsf't' and 8 connected bythe web 9. 'xtending from the lug 8 is the web 10 which ijpflaredoutwardly to conform with the ;passagefixfand terminates in thethreaded. portion 112,1As`i A illustrated in Fig. 3 the edge' ofthisiii'ember is inclined and rounded in order-to con-` form an'd lieflush with theoUter surface of the rods 1 and 2. By reason of the en-flarged lugs or bosses 7 and 8 fittifig within, ,V the respectiveopenings 3 and 4, a secure.

grip or hold is obtained upon therod's 1 and 2. In order to prevent theiiitlfs of the rods l and' Q'from splitting and beingyforced outward, asuitable ferrule as illustrated. in Fig. 4, is provided which fits uponthe frusto-conical ends of therods' l'and 2.v VThe said ferrule isshell-likeim form and frustoconical in configurationalid fits snuglyupon i Jthe end of the rod and'VV revents the'atta'ching ends of therodsfEfom moving'transversely tltereofii'if'ln this connection it is to beunderstood that thelugs 7 and 8 with the webs and threaded ends arefirst forced into position within the openings formed in the 'rod endsafter which the ferrule 12 is installed in position. Having thusprovided attaching means for grippmg the wooden rod ends in order tosecure and couple the threaded projcctions or ends 11 together, thecoupling member 13 is provided with the internally t-hreaded ends 14 and15. The central portion -of this union or coupling member is solid andthe outer surface of which may be milled to form a suitable wrenchengaging surface. A second coupling member 16 is provided with thethreaded plug 17 and the internally threaded socket 18, the threads inthis coupling being both preferably right-handed ones. The socket 18threadedly engages the portion 11 of the rod attaching member.

In the assembling of my improved coupling, the rod attaching memberswith their transverse extending lugs are first inserted in the ends` ofthe wooden rods. The ferrules-l are then postioned thereon. Theunionmember is then screwed upon the portion 11 whichthreadedly engagesthe Isocket 14. Attention is called to the fact i this connection thatthe diameter of the union is suflicient to extend over the/ end of vtheferrule and hold the latter firI ly in position. The plug and socket meQmv 'iloz threadedly positioned upon the ortioni 11 of the other rodattaching mem er and is also of a diameter sufiicient to contact withand hold in position the ferrule. The socket 15 and threaded plug 17arel now brought into threaded enga ement which efectually cou les thetwo ro s 1 and 2 together in an eflicient and secure mann'er.

Should the occasion arise in which it is not advisable or is impossibleto turn one of the rods 1 or 2, by .the use of a union member which isright and left handedly threaded, 'the plug and socket may first beassembled upon one of the rod attaching members and the union memberbrought into contactwith the plug thereof and the thread- Ved end of theother rod attaching member. Upon the rot-ation of theunion member thecou ling between the rods will be accomplis ed. o

I wishit to be understood that I do not 'wish to limit myself to the useof myamproved 'coupling'v with wooden rods as it is apparenbthat thesame may be effectually applied ,to rods of other materials toeffectually couple the latter.

Having thus fully described the construction and operation of myimproved rod coupling, what I cl'aim to be new and original with me isi 1. A coupling for rods, said rods provided with frusto-coni-cal ends,said rods provided with transverse openings adjac'ent the' ends, arestricted passage between said openin-gs, a restricted and fiaredpassage communioatingwith' the end of said rod and with one of saidtransverse openings, rod

attaching members ada ted to fit Within said rod end openings, errulesadapted 'to hold said rod attaching me bers in position in said. rodopenings, an internally threaded union member,` a plug and .socketthreaded member, said union member and plug and socketmember adapted tothreadedly engage said rod attaching members and effectually couple saidrods, said union member and said plug and socket membertbein furtheradapted to maint-ain said ferru es in position upon the rod ends.

2. In a coupling, the .combination With rods provided with transversetending therethrough and twith restricted commnuicatng passagestherebetween, of rod attaching members adapted to fit within said rodend openings, frusto-conical ferrules adapted to embrace the said rodends to maintain said rod engaging members securely in position, thelower ends of said rod engaging members externally threaded, and meansadapted to engage the external threaded ends of the rod 'attachingmembers to effect a coupling therebetween, said means contacting withthe lower extremities of said ferrules adapted to maintain the same inposition and to thereby maintain the said rod attaching members inposition. p

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two witnesses.

THOMAS STEPHEN KEMP;

Witnesses:

` G. S. PAmRsoN,

MULKE'Y PA'rrEasoN.

openmgs ex-

